The Triathlete’s Training Bible is the bestselling triathlon training guide for both beginner triathletes and seasoned competitors—now completely updated with the latest science-backed training methods to help you train smarter, recover faster, and race stronger.

Written by Joe Friel, one of the most trusted triathlon coaches in the world, this comprehensive triathlon book has helped hundreds of thousands of athletes succeed in the sport. In this fifth edition, Joe incorporates the latest endurance research, including new strategies for workout intensity, heart rate training, power and pace techniques, and personalized triathlon planning.

Whether you're aiming for your first sprint triathlon or preparing for a full Ironman™, The Triathlete’s Training Bible gives you the tools to:
Improve your swimming, cycling, and running performance Train with the right intensity and volume to maximize gains Recover faster and make up for missed workouts Adapt your training based on your lifestyle and race goals Build muscular endurance with a proven triathlon strength training program Use nutrition to improve body composition and performance Create a customized triathlon training plan that evolves with your progress
What's New in the Fifth Edition?

This edition introduces advanced techniques in aerobic endurance, intensity management, triathlon periodization, and streamlined use of training data. Joe Friel helps you cut through the noise and focus on the performance metrics that matter most—so you can get faster and more race-ready than ever.

Whether you're chasing a PR or just looking to finish strong, The Triathlete’s Training Bible is the essential guide to smarter, more effective triathlon training.